Kirkland & Ellis and Latham & Watkins have opted to take on additional office space at their new London offices, as U.S.-headquartered firms continue to grow their U.K. footprint.

Kirkland & Ellis, whose new home is currently under construction at London office development 40 Leadenhall Street, will add space to the original minimum 215,000 sq ft it agreed to lease, according to one person close to the process.